Pump-actuating mechanism.



P. J. WIGKBLOM.

PUMP AGTUATING MEGHANISM.

APPLICATION IILBD MAY 24. 191s.

l l 27, 1 42. Patented Feb. 2, 1915.

Inventor Attorneys THE NoPP| PETERS C0.. PHOTU-LITHD.. WASHING roN. D. C.

PETER J. "WICKBLGM, OF KEW'ANEE, ILLINOIS.

PUMP-ACTUATING MECHANISM'.

Application lerl May 24, 1913.

To all u1/wm may concern:

Be it known that l, PETER J'. T/VIGKBLOM, a citizen of the United States, residing at Kewanee, in the c'ounty of Henry and State of Illinois, have invented a new and useful Pump-Actuating Mechanism, of which the following is a specification.

This invention relates to piston rod operating mechanism whereby there will be little or no side strain brought to bear upon the piston rod, which would tend to throw the same out of alinement.

A further object is to provide a mechanism whereby the :rotation of handle will produce a rectilinear motion.

A further object is to provide a mechanism including a pump handle structure linkedly secured in place, the links being so designed and proportioned that the instantaneous axis of rotation of the pump handle structure will always lie on a line through the connection between the pump piston and the pump handle and at right angles to the path of travel of the pump piston.

With the foregoing and other objects in View which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, can be made within the scope of what is claimed, without departing from the spirit of the invention.

In the drawings accompanying this speciiication and forming a part thereof, the preferable form of my invention is illustrated, in which Figure l is a diagrammatic view of m improved mechanism operably secured to the piston of a pump. Fig. 2 is an end elevation thereof.

Referring to the drawings in which similar reference numerals designate corresponding parts tl'iroughout the several views, l represents the body portion of a pump and 2 the piston rod thereof. Projecting upwardly from the pump is a supporting structure 3 to which my improved mechanism is secured. Pivotally secured to the upper portion of the supporting structure 3 is the link 4, a somewhat similar link 5 being pivotally secured to the lower portion of the said supporting structure. The remote ends of the links l and 5 are pivotally secured to what is termed the moving element 6. The mov- Specification of Letters Patent.

Patented Feb. 2, i915. serial No. 769,751.

ing element 6 in addition to being pivotally secured to the extremities of the links and 5 is provided with the handle l' projecting outwardly therefrom and with the inwardly projecting actuating arm 8. The actuating arm 8 is pivotally secured as at 9 to the pump piston 2. rlhus by manual operation of the handle 7, the actuating arm 8 will be moved to thereby provide for the rectilinear motion of the piston rod 2. The theory and mode of operation of my improved apparatus is as follows :-l3y projecting the central line of the link 4 and the central line of the link 5 the point A is obtained as the intersection thereof and which point is what is termed the instantaneous axis of rotation of each and every point upon the moving element 6. Thus that point which lies upon the line of the piston rod 2, determined by the perpendicular let fall from the point A lupon the piston rod will have an instantaneous direction of with the movement of the piston rod 2. By so proportioning and designing the links and respective position of the links l`5, the actuating arm 8 of the moving element and the pivotal connection between the the said links a pivotal connection 9 is obtained between the actuating arm 8 and the piston rod 2 which will shift with the shifting of the instantaneous axis of rotation of the moving element so that it will constantly lie upon the piston rod 2 and at the intersection of the perpendicular let fall from the instantaneous axis of rotation upon the line of movement of the piston rod 2, so that the distance between the point 9 and the point A will be what is termed the instantaneous radius of rotation of the moving element.

The advantages of a structure which ohtains a rectilinear motion from the reciprocating or rotator-y motion of a handle will be readily apparent as it may be used in connection with walking beams, pumps, and similar structures wherein it is desired that no side thrust may at any time be exerted upon the actuated rod which could tend to increase the friction and throw said rod out of alinement with the stuffing box and other parts of the not necessary to provide a bearing for the piston rod as there will be no side thrust brought to bear thereupon the force being exerted in alinement with the axis of the piston rod.

mechanism. Thus it is The actuating arm 8 is provided with a plurality of apertures 10 therein. The structure 3 and also the links l and 5 are also provided WithV a plurality ot apertures whereby a wide range of throw of the piston 2 may be obtained and at the same time all the desirable features of a rectilinear motion retained.

Having thus :tully described the invention what l claim is l. ln a mechanism of the class described, the combination of a supporting structure, a movable element, two links pivotally secured thereto and pivotally secured to said supporting structure, the said links provided with means for adjusting the distance between the pivotal connections at their ends, an arm rigidly carried by the said movable element, a movable member pivotally secured to said arm, said arm provided with means for adjusting the length thereof as determined by its pivotal connection with the said movable member, the said links arranged to support the said movable element with the instantaneous axis of rotation thereof lying upon a line perpendicular to the path of travel of the said movable member and passing through the pivotal connection between the same and the said actuating arm to impart a rectilinear motion to the said movable Copies of this patent may be obtained for ve cents each, by addressing' the member, the adjustable links and arm maintaining the -rectilinear motion of the said movable member throughout various stroke lengths.

2. A mechanism of the class described comprising a movable element including an outstanding arm with a plurality of apertures at one end and a handle projecting in the opposite direction from said arm, links pivotally secured to the said movable element, said links provided at their remote ends with a plurality of apertures extending therethrough, supporting structures provided vvith a plurality of apertures pivotally and adjustably engaging the apertures of the said links, and a movable member pivotally engaging one of the apertures of said arm, the point of intersection of the longitudinal axes of the links continuously lying upon a line perpendicular to the movable member let fall thereon through the point of pivotal connection between the movable member and the said arm.

ln testimony that l claim the Jforegoing as my own, l have hereto affixed my signature in the presence of two witnesses.

PETER J. WCKBLOM.

f Witnesses:

SAMUEL SEIDMON, EDW. I. JOHNSTON..

Commissioner o! Patents,

Washington, ZD. C. 

